The Use of GIS in Studying and Modeling Traffic Noise and its Relationship to Land Uses in Riyadh

Abstract

This study aims to monitor, analyze and model spatial relationships of traffic noise and its intensity in major streets of Riyadh and surrounding residential areas. We shall adopt a mathematical model to obtain noise intensity level from the average number of passing vehicles in the road, their average speed and the percentage of trucks. By using methods of spatial data insertion in GIS system, it was possible to prepare noise maps (continuous area) which shows the nature and pattern of noise distribution in roads and surrounding areas, one set throughout the day and another through peak hours.These maps are useful for delineating areas with high noise level and areas of low noise levels. This information, in turn, is useful for selection of sites for land uses that require low level of noise, such as health facilities, schools, public libraries, etc.By analyzing the relationship between noise and land use of areas surrounding roads, it was possible to know the relationship between the activities and land uses of areas adjoining road, and the level of noise in the roads. The spatial analysis was also useful in understanding the factors that lead to the high noise levels in some roads.The conclusion contains recommendations and planning criteria that may help planners and decision makers to reduce noise levels down to allowable levels, to preserve people's health and comfort and conserve the environment.